February 2020
Intermediate to advanced
734 pages
38h 13m
English
Content preview from PostgreSQL 12 High Availability Cookbook - Third Edition
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How it works...
The process is as simple as we claimed. We can launch a migration by specifying resource migrate as our primary crm arguments. There are only two remaining parameters for us to define: the resource we want to migrate and the target location. The PGServer group represents PostgreSQL and all of its prerequisite storage elements, so that is our third parameter.
The last parameter is the target node, and as pg2 is the only other node in this Pacemaker configuration, it's an easy choice. What happens during a migration? The following is a screenshot of crm_mon during a migration:
As you can see, Pacemaker is doing just as we claimed ...
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